I want to understand something about how email is sent in a LAN environment and an external WAN environment. What I mean is this:
If I a user within a LAN and active directory domain structure send an email to a coworker, how does it get there? via Active directory? I heard the delivery of emails in a active directory environment is different than sending it thru SMTP external WAN addresses? Like servers send it via SMTP but witin the LAN the internal exchange server is a distirbution server that looks in the Active directory users and groups and the active directory sends the emails to its prospective domain contrllers based off OU groups and userrs?? is this true can someone straighten me out?
Thanks